diff options
| author | Jens Axboe <axboe@kernel.dk> | 2022-02-21 05:07:46 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-02-21 05:11:29 -0700 |
| commit | fd1d6cfafb4e9fb4d826175247527c7d1ca4ffc1 (patch) | |
| tree | 4614b9c57d2b70953846f11e612ec1ff56f9bdc7 | |
| parent | 89b35ac142460401316979a36cde1d9bb5dcb4e1 (diff) | |
| download | liburing-fd1d6cfafb4e9fb4d826175247527c7d1ca4ffc1.tar.gz liburing-fd1d6cfafb4e9fb4d826175247527c7d1ca4ffc1.tar.bz2 | |
test/pollfree: use mmap(2) instead of a manual syscall
A lot of the syzkaller tests aren't really applicable on non-x86,
or just simply assume x86.
Replace the syscall(__NR_mmap, ...) usage with a regular mmap(2) call,
and check for failure. Looks like some of these assume 4k pages as
well, so just bail if we fail mapping.
Fixes: https://github.com/axboe/liburing/issues/532
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | test/pollfree.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/test/pollfree.c b/test/pollfree.c index cdc7af0..4ef259c 100644 --- a/test/pollfree.c +++ b/test/pollfree.c @@ -391,12 +391,24 @@ void execute_call(int call) int main(int argc, char *argv[]) { + void *ret; + +#if !defined(__i386) && !defined(__x86_64__) + return 0; +#endif + if (argc > 1) return 0; - syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); - syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul); - syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); + ret = mmap((void *)0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); + if (ret == MAP_FAILED) + return 0; + mmap((void *)0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul); + if (ret == MAP_FAILED) + return 0; + mmap((void *)0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); + if (ret == MAP_FAILED) + return 0; loop(); return 0; } |